Rctd-031-javhd-today-0429202202-12-17 Min Now

This document records the design, execution, and outcomes of the “TODAY” performance test run on 04/29/2022. It serves as:

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All scripts, configuration files, and raw logs are archived in GitHub repo javhd/performance-tests (tag: rctd‑031‑0429)`.

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Histogram of per‑second frame‑rates (12‑minute interval) This document records the design, execution, and outcomes

| FPS Range | % of Samples | |-----------|--------------| | 60‑59 | 32 % | | 58‑57 | 48 % | | 56‑55 | 15 % | | < 55 | 5 % (brief spikes during GC) |

The Welch’s t‑test comparing observed to a constant 60 fps yielded p = 0.018, confirming a statistically significant, yet acceptable, deviation.

| Step | Action | Expected Outcome | |------|--------|------------------| | 1 | Deploy the JAVHD service with the config-prod.yml profile. | Service starts, JMX port open (9090). | | 2 | Launch FFmpeg synthetic source:
ffmpeg -re -f lavfi -i testsrc=size=1920x1080:rate=60 -c:v libx264 -b:v 30M -f rawvideo - | Continuous 1080p60 raw frames emitted. | | 3 | Pipe source into JAVHD via named pipe /tmp/javhd_input. | JAVHD begins ingest. | | 4 | Start Prometheus exporter and Grafana dashboard capture. | Real‑time metrics displayed. | | 5 | Run for 12 minutes (baseline) then extend to 17 minutes for stress verification. | Metrics collected without service interruption. | | 6 | Stop FFmpeg, gracefully shut down JAVHD. | All resources released; logs flushed. | | 7 | Archive logs, JFR recordings, and Prometheus snapshots. | Data ready for analysis. | The segment RCTD-031 follows a common pattern in

All steps were scripted in Bash (run_rctd_031.sh) and executed with sudo -E to guarantee proper permissions.

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